Answer / dnt

The trip circuit extends beyond the relay enclosure and
passes through more components, such as fuses, links, relay
contacts, auxiliary switch contacts and so on, and in some
cases through a considerable amount of circuit wiring with
intermediate terminal boards.

These complications, coupled with the importance of the
circuit, have directed attention to its supervision.The
relay use for supervision called supervision relay.

Answer / mohan

tripping relay supervision is also known as master trip relay
its relay code is 86 its command make the circuit breaker to
release the contacts it is one of the main relays used in electrical circuits

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